package tools

import (
	"time"
	"math/rand"
	"strconv"
)

func RandomIntString(len int) string{
	r := rand.New(rand.NewSource(time.Now().UnixNano()))
	str := ""
	for i:=0; i<len; i++ {
		str += strconv.Itoa(r.Intn(10))
	}
	return str
}
